Josh42 Posted July 30, 2015 Share Posted July 30, 2015 Hi all, A friend from work is having an issue with the brakes on his 1996 Celica GT and I'm hoping you guys maybe able to offer advice as to the potential root cause. So, the symptoms: The car was absolutely fine driving home from work and when parked on the drive, the next morning on the drive in, he noticed the pedal travel was excessive and the brakes only started actually slowing the car at the bottom of the travel. He checked all corners for obvious signs of leaks and noticed an amount of thick gunk on the back of the N/S/F wheel, but none of the others. He's tightened up all brake unions, replaced copper washers on banjo fittings and then attempted to bleed the brake system. He did make the mistake of trying to bleed the N/S/F first, as opposed to beginning furthest away from the master cylinder, however, even then there was so much air coming out, with no signs of letting up even after topping up way over 1L of brake fluid. Here's where it gets really strange, I popped round to give him a hand and told him to begin bleeding from the N/S/R, but when we cracked the nipple and operated the vacuum bleeder, no fluid came out. We pretty much removed the bleed nipple and still no fluid came out... Any ideas? Link to comment Share on other sites More sharing options...
listy Posted July 30, 2015 Share Posted July 30, 2015 Block in the line? Split in a brake hose? Master cylinder? Link to comment Share on other sites More sharing options...
Josh42 Posted July 30, 2015 Author Share Posted July 30, 2015 I can't see a split in any of the flexi's or hard lines, and there's certainly no evidence of a leak... I think It could be a blockage or the master cylinder rubbers Link to comment Share on other sites More sharing options...
Benjy Posted July 30, 2015 Share Posted July 30, 2015 So what was the score with the thick gunk? Link to comment Share on other sites More sharing options...
Josh42 Posted July 31, 2015 Author Share Posted July 31, 2015 Benjy said: So what was the score with the thick gunk? I think it's historical brake fluid, but I can't find a current leak.... Any ideas Ben? Link to comment Share on other sites More sharing options...
Josh42 Posted August 5, 2015 Author Share Posted August 5, 2015 Bump? Link to comment Share on other sites More sharing options...
Josh42 Posted August 20, 2015 Author Share Posted August 20, 2015 Anyone? Link to comment Share on other sites More sharing options...
TBDevelopments Posted August 20, 2015 Share Posted August 20, 2015 Well got to be leaking somewhere mate and loosing fluid, this a gt4 or st202 model? Id go over it and check the system, flush it through and clean it up and once its been rebleed look for weeping and go from there. Could even be caliper piston seals, rusted lines, anything really Tim TB Developments Link to comment Share on other sites More sharing options...
Benjy Posted August 20, 2015 Share Posted August 20, 2015 Josh42 said: I think it's historical brake fluid, but I can't find a current leak.... Any ideas Ben? Sorry mate, only just noticed this... As Tim says, with the gunky stuff around the caliper, it could be leaking from there. I'd clean it all up, change the fluid, run the car and get someone to hold the brake pedal down as hard as they can and inspect for leaks. Link to comment Share on other sites More sharing options...
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